| Müller-electronic GmbH | Lower Saxony |
| Multi Channel Systems MCS GmbH | Baden-Württemberg |
| Multi Data Digital GmbH | Hesse |
| Multi Data Wedemann Vertriebs GmbH | |
| Multi-Software-Design | Berlin |
| multicom Software-Entwicklung Dr.Ruchert & Co. GmbH | Saarland |
| multiConnect GmbH | Bavaria |
| MULTIDATA Gesellschaft für Datentechnik und Informatik mbH | |
| Multimedia Kontor Hamburg gGmbH | |
| Multimedia Service Buchmann GmbH | Baden-Württemberg |
| Multimmune GmbH | |
| Multitron Elektronik GmbH & Co. KG | Baden-Württemberg |
| Multivac | |
| Mummert Media | Saxony |
| Münchner Linux Usergroup | Bavaria |
| Mund Consulting AG | Hesse |
| Mundorf EB GmbH | North Rhine-Westphalia |
| Munich Business School | Bavaria |
| Munich Innovation Labs GmbH | |
| Munich Institute for IT Service Management GmbH | Bavaria |
| Munich Network e.V. | |
| Munich Quantum Valley | |
| Munich Startup | Bavaria |
| Munich Ventures | |
| Munich Workstlye GmbH | |
| Muniqsoft Consulting GmbH | Bavaria |
| Murrelektronik GmbH | Baden-Württemberg |
| Music Player Daemon | North Rhine-Westphalia |
| Mustafa Görmezer | Lower Saxony |
| MV Elektronik Recycling GmbH | Baden-Württemberg |
| mv-soft Ltd | Mecklenburg-Vorpommern |
| MVB Consulting | |
| MVC Mobile VideoCommunication GmbH | Hesse |
| mVISE AG | |
| MVK System GmbH | Berlin |
| MVP Factory | |
| MVP Management GmbH | |
| MVPF Technologies GmbH | |
| MVST GmbH | |
| MVTec Software GmbH | Bavaria |
| MW Computersysteme | Saarland |
| MW Software | Rhineland-Palatinate |
| MWM Software & Beratung GmbH | North Rhine-Westphalia |
| MWResearch GmbH | |
| MXP GmbH | |
| MxWebhosting | Saxony |
| MyArtSide | Saxony |
| MyBiotech GmbH | |
| MYCOM AG | Berlin |
| MyDashboard.cloud | |